MigraDoc.DocumentObjectModel.Shapes.Barcode bcode = table.Rows[Row - 1][Column - 1].Elements.AddBarcode();
                bcode.Code = "code";
                bcode.Text = true;
                bcode.Type = BarcodeType.Barcode128;

public void GeneratePreview()
        {
            string str = MigraDoc.DocumentObjectModel.IO.DdlWriter.WriteToString(this.StickersDoc);
            this.documentPreview1.Ddl = str;
        }

at MigraDoc.Rendering.TopDownFormatter.FormatOnAreas(XGraphics gfx, Boolean topLevel)
   at MigraDoc.Rendering.FormattedCell.Format(XGraphics gfx)
   at MigraDoc.Rendering.TableRenderer.FormatCells()
   at MigraDoc.Rendering.TableRenderer.InitFormat(Area area, FormatInfo previousFormatInfo)
   at MigraDoc.Rendering.TableRenderer.Format(Area area, FormatInfo previousFormatInfo)
   at MigraDoc.Rendering.TopDownFormatter.FormatOnAreas(XGraphics gfx, Boolean topLevel)
   at MigraDoc.Rendering.FormattedDocument.Format(XGraphics gfx)
   at MigraDoc.Rendering.DocumentRenderer.PrepareDocument()
   at MigraDoc.Rendering.Forms.DocumentPreview.DdlUpdated()
   at MigraDoc.Rendering.Forms.DocumentPreview.set_Ddl(String value)
   at BarCodeGenerator.FormBarcodes.GeneratePreview()
   at BarCodeGenerator.FormBarcodes..ctor(Int32 Column, Int32 Row)
   at BarCodeGeneratorTest.Form1.button1_Click(Object sender, EventArgs e) in D:\komponenty CH\BarCodeGenerator\BarCodeGeneratorTest\Form1.cs:line 27
   at System.Windows.Forms.Control.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ButtonBase.WndProc(Message& m)
   at System.Windows.Forms.Button.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
   at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
   at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.Run(Form mainForm)